EAM

http://www.slideshare.net/jcvd12/oracle-ebs-r12-eam-moduleupk

EAM Tables:

Workorders Table:    

1- EAM_WORK_ORDER_DETAILS

Columns     WIP_ENTITY_ID                 

                    ORGANIZATION_ID


Work Request Table:

2- WIP_EAM_WORK_REQUESTS
Columns     Work_Request_id
                    Work_Request_Number


3- WIP_ENTITIES
Columns     WIP_ENTITY_ID              
                    ORGANIZATION_ID

Data Uploading Script in  the interfaces as below:

bom_op_routings_interface

bom_op_sequences_interface

bom_op_resources_interface

http://sairamgoudmalla.blogspot.com/2010/08/to-import-routing-with-operations-and.html

http://oracleappss.blogspot.com/2008/07/routing.html

Other Eam API's information is at location:
https://docs.oracle.com/cd/E18727_01/doc.121/e13671/T282740T282716.htm#T282725